/*
Tests the updated floating point plot function
The datum is set to the centre of the 320 x 240 screen
so numbers are printed the middle.

The last test shows the datum point as a red dot.

Normally strings are printed relative to the top left corner but this can be
changed with the setTextDatum() function. The library has #defines for:

TL_DATUM  0 //Top left
TC_DATUM  1 //Top centre
TR_DATUM  2 //Top right
ML_DATUM  3 //Middle left
MC_DATUM  4 //Middle centre
MR_DATUM  5 //Middle right
BL_DATUM  6 //Bottom left
BC_DATUM  7 //Bottom centre
BR_DATUM  8 //Bottom right


 Needs fonts 2 and 6

 Make sure all the display driver and pin comnenctions are correct by
 editting the User_Setup.h file in the TFT_eSPI library folder.

 #########################################################################
 ###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
 #########################################################################
 */

#include <M5Stack.h>

unsigned long drawTime = 0;

void setup(void) {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setRotation(1);
}

void loop() {
    char tmp[12];

    M5.Lcd.fillScreen(TFT_BLACK);
    M5.Lcd.setTextColor(TFT_WHITE, TFT_BLACK);

    // Datum is middle centre
    M5.Lcd.setTextDatum(MC_DATUM);

    // Test floating point drawing function:
    // drawFloat(value, precision, x, y, font);

    float test = 67.125;
    M5.Lcd.drawFloat(test, 4, 160, 120, 6);
    M5.Lcd.drawString(dtostrf(test, 4, 4, tmp), 100, 200, 6);

    delay(1000);
    M5.Lcd.fillScreen(TFT_BLACK);

    test = -0.555555;
    M5.Lcd.drawFloat(test, 3, 160, 120, 6);
    M5.Lcd.drawString(dtostrf(test, 2, 2, tmp), 100, 200, 6);

    delay(1000);
    M5.Lcd.fillScreen(TFT_BLACK);

    test = 0.123;
    M5.Lcd.drawFloat(test, 4, 160, 120, 6);

    M5.Lcd.drawString(dtostrf(test, 4, 4, tmp), 100, 200, 6);

    delay(1000);
    M5.Lcd.fillScreen(TFT_BLACK);

    // This does not work at the moment....
    test = 9999999;
    M5.Lcd.drawFloat(test, 0, 160, 120, 6);
    M5.Lcd.drawString(dtostrf(test, 4, 4, tmp), 100, 200, 6);
    delay(1000);

    // Plot the datum for the last number
    M5.Lcd.fillCircle(160, 120, 5, TFT_RED);
    M5.Lcd.setTextDatum(MC_DATUM);
    M5.Lcd.setTextColor(TFT_BLACK);
    M5.Lcd.drawString("X", 160, 120, 2);

    delay(4000);
}
